Furnace arch



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F. C. STIMMEL FURNACE ARCH Filed Oct. 19, 1923' 6 Sheets-Sheet 2v .June 9, 1925. y LEMA@ F. C. STMMEL FURNACE ARCH Filed oct. 19, 192:5 e Sheng-sheet s June 9, 1925. 354mm F. C. STIMMEL FURNACE ARCH Filed oct. 19 1925 e sheets-sheet 4 F `)une 9, 1925.

F. C. STIMMEL FURNACE ARCH Filed ocr. 19,1925

6 Sheets-Sheet 5 June 9, 1925. f 1,541,441

F. c. STIMMEL v FURNACE ARCH Filed oct. 19, 1923- e sheets-sheet e @1511743 A7-f7 Parent-ee June e, 192s.

UNITED STATES `PATENT OFFICE.

FREDERICK c. sTmMEL, 01s'-onnansnrxooee1 TEnnEssEE, AssIGNoB To THE CASEY- H'EDGES co., or'orLA'r'rANooGn, TENNEssEnA coRPoRA'rIoN or OHIO.

FURNACE ABCE.

Application 'inea october 19, 192s. 'serian No. 669,511.

To all whom t may concer/n.:

Be it known that I, FREDERICK C. STIM- Mnna citizen of the United States, residing at Chattanooga,in the coggty Q Hamilton and State of Tennessee, have invented certain new and useful Improvements in Furnace Arches, of which the following is a full, clear, and exact specification.

This invention relates. to furnace arches for steam boilers and is especially designed for use inthe construction of ceilings for. offset reboxes.

improved and simplified means for supporting the tiles constituting the'main ceilings of such oii'set reboxes,'so that said tiles may be removed individually and new ones substituted therefor without :necessitating the removal of other tiles. Said Ina-in ceiling tiles .are suspended from supporting rails in such a manner that when one of sald tiles is to be removed it may be automaticall disengaged from its supporting rail by slmply pushing said tile upwardA from below the ceiling or inside the reboxit being unnecessary to tear up lthe roof of the irebox or otherwise obtainvaccess to the supporting means above said tiles. These main ceiling tiles, which are individually suspended and may be individually' removed, will hereinafter be referred to as the pendulum hanger tiles,

Another object of the invention isv to provide improved means for supporting the tiles composing the curved inner end portion of the irebox ceiling where the main ceiling joins the base of the front wall of the boiler setting at the rear or inner end of the offset firebox. These tiles, because of their shape and arrangement, will be hereinafter referred to as ,fan ytiles to distinguish them from the pendulum hanger tiles composing :the main ceiling of the frebox. Said fan tiles are supported in such a manner that they may be removedfor renewal by simply taking out a small section at the base of the front wall of the boiler setting arranged just above said tiles, the main portion of said wall above said removable section having independent supporting means so that when said removable section is taken out' a space is provided immediate] above the upper row of the fan tiles throng which ceed Itis the aim'of the invention Ato provide the several rows of said tiles may be successively removed,

The invention also contemplates the use of novel forms of pendulum hanger tiles and fantiles, which are shaped or formed to properly co-operate with their supporting means in order to permit said tiles to be removed as explained, and also to permit each of said types of tiles 'to be interchangeably used with others ofthe same type. Other objects will appear as the description pro- The invention'will be first hereinafter described in connection with the accompanying drawings, which constitute part cf this specification, and then more specifically dened in the claims at the end of the description. l

in the accompanying drawings, wherein similar'reference characters are used to designate corresponding parts throughout the several views:

Figure 1 is a broken perspective view of the ceiling of an offset irebox for steam Vboil-ers constructed substantially inaccordance with this invention.

Figure 2 is a fragmentary view of a portion of said ceiling drawn to a larger scale with parts in section.

Figure 3 is a section on the line 3-3 of Figure 2.

Figure 4 is a section on the line dell of Figure 2.

Figure 5 is a. section on the line 5 5 of Figure 2.

Figure 6 is a Figure 2.

Figure 7 is a' fragmentary view, similar to "Figure 2, of an arch having 'its main portion or ceiling inclined instead of horizontal.

Figure 8 is a detailed perspective View, drawn to a larger scale, of one of the hanger clamps used for supporting the hanger beams from the main roof beams of the irebox.

Figure Q is a detailed erspective View, also drawn to a larger sca e, of one of the knee clamps used (for supporting the knee brackets which, in turn, supportV the fan tiles and the adjacent row of pendulum hanger tiles. i

Figure 10 is a detailed side elevation of one of the types of knee brackets used for section on the vline 6--6 of supportingthe fan tiles and also for supporting the adjacent row of pendulum hanger tiles.

Figure 11 is a section on the line 11-11 of Figure 10.

Figure 12 is a plan view ofthe knee bracket illustrated in Figure 10.

Figures 13 and 14 are inner edge and side views, respectively, of another type of knee bracket used alternately with the type illustrated in Figures 10, 11`and 12 for supporting the fan tiles but which do not support the adjacent row of pendulum lia-nger tiles. Figures 15 and 16 are side and top plan views, respectively, of one of the pendulum hanger tiles.

Figure 17 is a section on the line 17-17 of Figure 15.

`Figure 18 is `a detailed view of one of the tile clips used for supporting the pendulum hanger tiles composing the horizontal main portion of the ceiling of a lire box as illustrated in Figures 1 to 6, inclusive.

Figure 19 is a section on the line 19-19 of Figure 18. Figure 2O is a detailed view, similar to Figure 18, of a slightly modified form oftile clip for use in supporting the pendulum hanger tiles forming the inclined main ceiling of a lirebox as illustrated in Figure 7. p

Figure 21 is a section on the line 21-21 of Figure 20, and

Figures 22 and 23 are edge and side views, respectively, of one of the fan tiles.

In Figure 1 a part of an offset irebox for a steam boiler is indicated at 1, and the front wall of the boiler setting, which rises from the inner end of said irebox, is partially shown at 2. The ceiling of said lirebox consists of a main horizontal portion 3 composed of pendulum hanger tiles 4, and a curved inner end portion 5 composed of fan tiles 6, said Curved ceiling portion 5 eX- tending from the inner end of the main ceiling portion 3 to the under surface of the front wall 2 of the boiler setting.

The pendulum hanger tiles 4 composing the main portion of the ceiling of the lirebox are supported by tile clips 7 from I- vbeams 8 running longitudinal] of the firebox and, in turn, suspende by hanger clamps 9 from transverse I-beams 10, the .ends of which may rest on the side walls of the irebox. The hanger clamps 9, one

` of which is illustrated in detail in Figure 8, has transversel arranged grooves 11 and 12 to engage the ase flanges of the I-beams 10 and the top flanges of the I-beams 8. Portions of the top anges of said I-beams 8 are cut away at 13 to permit said clam s 9 to be conveniently assembled with said I-beams 8 and 10, as will be readily underl stood.

The base flan es of the I-beaxns 8 have upwardly turne edges 14 over which the tile clips 7 are adapted to hook. Two, of

said tile clips are used for supporting each of the pendulum hanger tiles 4, and the clips of each pair engage opposite edges of the base flange of one of the I-beams 8. Each of the clips 7 is formed in the shape of a stirrup as illustrated in detail in Figures 18 and 19 with two spaced arms or prongs 15 adapted to straddle the reduced top portion of the tiles 4, and a bridge portion 16 connecting the up er ends of said arms 15 and provided wit a laterally extending hook 17 to engage over the upwardly turned edges 14 of the base flange of the I-beams 8. The outer faces 18 of the clips 7 are substantially vertical, as best shown in Figures 3, 4 and 19, but the inner faces 19 of the arms 15 of said clips arev inclined inwardly and downwardly. From the lower ends of the arms 15 of each of the clips 7 horizontal lugs 20 extend toward each other. Said lugsare arranged substantially in line with the center of gravity of their clip, and they may be flush with the outer vertical face 18 thereof and spaced from t-he lower portions of the inclined inner faces 19 of said arms, see Figure 19. v

Each of the pendulum hanger tiles 4 is formed as best illustrated in Figures 15, 16 and 17. Its body portion 21 comprises a rectangular block while its inte al top portion 22 has u wardly converglng side and end Walls so t at the top surface of the tile is considerably shorter and narrower than its body portlon 21. The sides of the reduced top portion 22 of the tile are cut away, as shown, to form alined central vertical' passages or grooves 23 and substantially horizontal passages 24 extending longitudinally in opposite direction from the bases of said grooves 23, leaving overhanging abutments or lugs 25 at opposite sides of each of said verticalgrooves 23. The lower edges of said overhanging abutments or lugs are slightly inclined upwardly from the vertical-grooves 23 to the extremities of the horizontal grooves 24. The width of the vertical grooves 23 is such as to permit the lugs 20 on the cli s 7 to pass down them, and the vertical imensions of the horizontal grooves 24 are such as to permit said lugs 20 to pass freely along the samey below t e overhanging abutments or lugs 25 of the tile 4. The width of the top portion of the reduced upper part 22 of the tile, between the vertical grooves 23 on opposite sides thereof, corresponds substantially to the distance between the lugs 20 on the clip 7.

'lwo of the clips 7 are used for supporting each of the pendulum hanger tiles 4 from the base flanges of the I-ieams 8, as aledges of said abutments' 25 will tend to retain said lugs 20 in theyou'ter end of the grooves 24 so that the clips'will assume substantially vertical positions as shown. Inward projections 190 at the lower ends of the arnjis of the clips 7 also serve to prevent the lugs from coming out of the grooves 24.

lVllen one of the tiles 4 is to be removedy for renewal, it is only necessary to push upward on the same` as illustrated in the right hand portion of Figure 3, when the inclined inner faces 19 of the arms 15 of the clips 7 will engage the lateral edges of the base flange of the I-beam 8 and cause said clips to rock outwardly at their upper ends so as to release their upper hooked ends 17 from the upwardly turned edges 14 of said base flanges of the I-beam 8. When this rocking of the clips has been accomplished the tile may be lowered and removed from the ceiling of the rebox, and another tile substituted by reversing the operation just described.

Sometimes the ceilings of ollset fireboxes are arranged on anincline instead of horizontal, and to effect such a change in the structure illustrated in F i res 1 and 2, the I-beams 8 and 10 may be inclined as shown in Figure 7. The tile clips 70, for supporting the pendulum hanger tiles 4 from the inclined I-bea-ms 8, are constructed like the clip 7 already described except that their hook portionsv170 are beveled in opposite directions as clearly illustrated in Figures 2U and 21 as well as Figure 7 By beveling said hooks 170 in opposite directions, the

vclips 7 0 are adapted to be used on supporting -beams which are inclined in either direction. and said clips serve to support the tiles -l in vertical position on said inclined beams.

The fan tiles 6 constituting the curved inner end section 5 of the lirebox ceiling or arch are supported on knee brackets of which there are two types or forms 26 and 27. These knee brackets are: hung from a pair of transverse I-bearis 28 which are mounted in the front wa 2 of the boiler setting preferably on a slightly higher level lthan the I-beams 10. Said I-beams 28 are `and 14.

gether by bolts 30 passed through said beams and plates. The knee brackets 26 and 27 are supported by knee clamps 31 and bracket washers 32. The knee clamps, one of which is illustrated in Figure '9, are arranged in pairs to embrace the upper flanges and webs of the knee brackets, as best shown in Figure 4, and have enlarged head portions 33 (mei-lapping4 the adjacent lower flanges of the I-beams 28, as best shown in Figures 2 and 7. connected together at their upper and lower ends by bolts 34. The bracket washers 32 are connected to the upper flanges of the knee brackets by bolts 35, said washers resting at onevend on said upper flanges of said knee brackets, while their other ends overlap the adjacent base flange. of one of the I-beams 28. Y

The two types of knee brackets 26 and 27 are arranged alternately along vthe .I-beams- 28, the brackets`26 being spaced apart a distance equal to the length ofthe pendulum hanger tiles 4, and the brackets 27 being arranged midway between adjacent brackets 26. The brackets 26 have step-flanges 36 arranged substantially on the same level with the base flanges of the I-beams 8, as clearly shown in Figure 2. Said stepflanges 36 have upwardly turned edges 37 similar to the upwardly turned edgesv 14 of the I -beams 8, and they serve to support the inner row of pendulum hanger tiles 4, which Contact with the lower row of the fan tiles 6. The knee brackets 27 have steps 38 arranged on al higher level than thestep-flanges 36v of the brackets 26, and they, being located above the meeting ends of the inner row ot pendulum hanger tiles 4, are'not required to aid in the support of said tiles which are hunfr by clips 7 from said step flanges 36, of tlie brackets 26, as clearly illustrated in Figure 4. lThe knee brackets 26 and 27 'have angularslots 39 and 40, respectively,- in their vertical webs, said slots being shaped differently on account of the different height of the steps in said bracket, see Figures l0 The bolts 34, which connect together the assembled pairs of knee clamps 31. pass through' said slots 39 and 40 in the webs of the brackets 26 and'27.

The knee brackets 26 and 27 have vertical flanges 41 and 42, respectively, extending downwardly from their step-flanges 36 and 38. From said vertical flanges, `arcuate base flanges 43 extend upwardly and rearwardly for su )porting the fan tiles 6. Said arcuate baseilanges v43 extend on opposite sides of the webs of the knee brackets and terminate some distance below Jthe top flanges 44 of the kneeV brackets. Said top flanges 44 vextend rearwardly be ond the upper ends of the arcuate base anges 43 of the knee brackets and have ,their rear portions 52 broadened for supporting the Said knee clamps are y main portion of the wall 2 which is also supported on plates 45 resting on the I- beams 28. A

All of the fan tiles are preferably made alike so that they may be used interchangeably. As best illustrated in Figures 22 and 23, each of said fan tiles has parallel lateral faces'46 and diverging front and rear faces 47, the top and bottom faces 53 and 54 of each tile being arcuate and constituting concentric arcs of circles having their center at the point of meeting of extensions of the diverging faces 47. The faces 46 of thefan tiles 6 have arcuate grooves 48 formed therein to engage the arcuate base flanges 43 of the knee brackets 26 and 27, it being noted that the Width of the fan tiles is one-half the length of the pendulum hanger tiles 4, see Figures 1 and 6. Above said arcuate' grooves 48, the fan tiles are slightly reduced inwidth, as best shown in Figures 22 at 49, in order to allowy for the thickness of the webs of the knee brackets, see also Figures 5 and 6. The upper portion of the rear face 47 of each fan'tile is cut away at 50 to allow for the vertical flanges 4l and 42 of the knee brackets 26 and 27, respectively, so that the front row of fan tiles may 'abut against the rear row of the endulurn hanger tiles, as clearly shown in igures 1, 2 and 7, said cut-away portions .5G being provided on the -fan tiles of the other rows in order that they may be interchangeably used in the front row.

Between the rearmost row of fan tiles, which have their upper faces substantially horizontal, and the top flanges 44 of the knee brackets 26 and 27, there are several courses of bricks 51 at. the base of the'wall 2. When it is desired to replace any of the fan tiles, said section 51 of the wall 2 may be removed without dislodging the maln portion of said wall which is carried on the top flanges 44 of the knee brackets and on the plates 45 on top of the I-bealns 28. When said section 51 of the wall 2 is 4removed the rows of fan-tiles may be successively raised above VVthe u per ends of the arcuate base Hanges 43. 0 the knee brackets and removed therefrom.' The fan tiles are put in place in the same manner,'successive rows being first introduced through the space formed bythe removal of the section 51 of the wall 2, then having their arcuate grooves 48 engaged with the arcuate base flanges 43 of the knee brackets, and finally moved along said flanges to pro er position. After the uppermost .row of an tiles, which is also the rearmost row, has been placed in position in this way, the section 51 of the wall 2 is built up to fill the space between said fan tiles and the main part of the wall l2 above the top flanges 44 of the knee brackets.

' other and disen Referring again to the hanger clamps 9, it will be noted that the transversely arranged grooves 11 and 12 therein communicate with each other through slots 90, illustrated in Figure 8. In other words, the top of the lower slot 12 extends above the base of the upper slot 11, so that when each of said clamps 9 is assembled with the -beams 8 and 10, ample clearance is provided, as indicated at 91 in Figures 2 and 3, to allow' for the expansion and contraction of said I-beams.

I claim:

1. In a furnace arch of the character described, hanger beams having oppositely extendin base flanges, pendulum hanger tiles, an tile clips for supporting said tiles from said beams, a pair of said clips having rocking engagement with each of said tiles and each palr of clips having hooked upper ends extending toward one another for engaging over the oppositely extending base flanges of the same hanger beam, the facing portions of each pair of clips being inclined downwardly and toward each other, whereby said pair of clips may have their hooked up er ends swung away from each other for isengaging them from the hanger beam under the action of said inclined portions engaging the base flanges of said hanger beam when a tile`is pushed upward substantially as described.

2. In a furnace arch of the character described, hanger beams having oppositely extending base flanges with upwardly turned edges, pendulum hanger tiles, and tile clips for supporting said tiles from said beams, a pair of said clips having rockingengagement with each of said -tiles and provided with hooked upper ends extending toward one another for engagement over the upvwardly turned edges of the oppositely 'extending base flanges .of the same hanger beam, thefacing portions'of each pair of clips being inclined downwardly andl toward each other, whereby the hooked u per ends of said clips will be swung away rom each ged from the upwardly turned edges of t e base flanges of the hanger beam under the action of said inclined faces of the cli s engaging said base flanges of the beam w en a tile is pushed upward substantially as described.

3. In a furnace arch ofthe character dcscribed, hanger bealns havingbase flanges,

`pendulum hanger tiles having reduced up per portions wlth recesses in their oppositel faces, and tile clips for supporting said tiles from Asaid beams, each clip having a hooked npper end portion for engaging over one of the base flanges of said beams, and each clip also 'having spaced downwardly extending arms to embrace the re duced upperrportion of a tile, there being for engaging over said flanges, and each clip extending also having spaced downwardl to the rearms embracing and connecte duced upper portion of a tile.

5. n afurnace arch of the character described, hanger beams having oppositely extending base flanges, pendulum hanger tiles having reduced upper portions, and tile clips for supporting said tiles from said beams, a pair of said clips being employed for supporting each tile from the oppositely ex tending base flanges. of the same hanger beam, the clips of each pair havinghooked upper end portions to engage over said oppositely extending lianges, and each .clip also having spaced downwardly extending arms embracing and having rocking engagement with the reduced up er portion of a tile, the facing portions o; the arms ofeach pair of clips being inclined downwardly and tcward each other whereby the upper hooked ends of said clips may be swung away from each other and disenga d from the base flanges of the hanger` ti e under the action of said inclined portions of the arms of the clips engaging said flanges when the tile is pushed upward substantiall as described.

6. In a furnace arch of t e character described, hanger beams having oppositely extending base flanges, pendulum hanger tiles having reduced upper portions with alined vertical grooves dis osed centrally of their opposite faces, there being horizontal grooves in the opposite faces of said reduced upper portionsof said tiles, said horizontal grooves communicating with and extending in opposite directions from the lower ends of said vertical grooves, and tile clips for supportingsaid tiles from said beams, a pair of ysaid clips being employed for supporting each tile from the oppositely extending base flanges of the same beam, the clips of each pair having hooked upper end portions extending toward each other to engage over said base flanges of a beam, and each clip also having spaced downwardly extending arms to embrace the reduced upper portion of a tile, there being lugs on the lower end portions of'- the arms of each clip to engage in the horizontal grooves in the op@ posite faces of said reduced upper portion of a tile, each pair of clips being attached to the 't'ile they are to support by having the lugs on the arms of each clip successively passed down through the vertical grooves in the reduced upper portion of the tile and then along the horizontalgroovcs towards opposite ends of the tile.

7. In a furnace arch of the character described, hanger tiles having oppositely eX- tending base flanges, pendulum hanger tiles having reduced upper portions with alined vertical grooves disposed centrally of their opposite faces, there being horizontal grooves in the opposite faces of said reduced upper portions of said tiles, said horizontal grooves communicating with and extending in opposite directions from the lower ends of said vertical grooves, and tile clips for supporting said tiles from said beams, a pair of said clips being employed for supporting eachA tilefrom the oppositely extending base flanges of the same beam, the clips of each pair having hooked upper end portions extending toward each other to engage over said base flanges of a beam, and each clip also having spaced downwardly extending arms to embrace the reduced upper portion of a tile, there being lugs on the lower end portions of the arms of each clip to engade in the horizontal grooves in the opposite faces of said reduced upper. portion of a tile, each pair of clips bemg attached to the tile they are to support by having the lugs on the arms of each clip successively passed down through the vertical grooves in the reduced upper portion of the tile and then along the horizontal grooves towards opposite ends of the tile, the lower end portions of the arms of each pair of clips also having inward projections for retaining said lugs in said horizontal grooves when both clips of a pair are engaged therewith.

8. vIn a furnace arch of the character described, hanger tiles having oppositely extending base flanges, pendulum hanger tiles having reduced u per portions with alined vertical groovesdjispcsed centrally of their opposite faces, there being horizontal grooves `in the opposite faces of said reduced upper portions of said tiles, said horizontal grooves communicating with and extending 1n opposite directions from the lower ends of said vertical grooves, and tile clips for supporting said ytiles from said beams, a pair of said clips being employed for supporting each tile from .the oppositely extending base flanges of the same/beam, the clips of each pair having hooked upper end portions extending toward each other to engage 'over said base flanges of a beam, and each clip also having spaced downwardly extending arms t0 embrace the reduced upper portion of a tile,-

there being lugs on the lower end portions of the arms of cach clip to engage in the `horizontal groovesV in the opposite faces` of said reduced upper portion of a tile, each pair of clips being attached to the tile they are to support by having the lugs on the arms of each clip successively passed down through the vertical grooves 1n the reduced upper portion of the tile and then along the horizontal grooves towards opposite ends of the tile, the upper walls of the end portions of said horizontal grooves being inclined upwardly for the purpose spec1fied.

9. In a furnace arch of the character described, hanger tiles having oppositely extending base fla es, pendulum hanger tiles having reduce alined vertical grooves disposed centrally of their opposite faces, there being horizontal ooves in the opposite faces of said reduce-rupper portions of said tiles, said horizontal grooves communicating with andI extending in opposite directions from the lower ends of said vertical grooves, and tile clips for supporting said tiles from said beams, a pair of said clips being employed for supporting each tile from the oppo` sitely extending base flanges of the same beam, the clips of each pair having hooked upper end portions extending toward each other to engage over said base flanges of a beam, and each clip 'also' having spaced downwardly extending arms to embrace the reduced upper portion of a tile,`there being lugs on the lower end portions of the arms of each clip to engage in the horizontal grooves in the opposite faces of said reduced upper portion of a tile, each pair of clips being attached to the tile they are to support by having the lugs on the arms of each clip successively passed down through the vertical groo'ves in the reduced upper portion of the tile and then along the horizontal grooves towards opposite ends of the tile, the facing ortions ,of each pair of clips being tapered ownwardly and toward each other for the purpose specified.

10. In a furnace arch of the character described, hanger beamshaving inclined base flanges, pendulum hanger tilesLand tile clips for supporting said tiles from said beams, said clips having hooked upper end portions with beveled underfaces to engage over the inclined base flanges of said hanger beams for supporting said tiles in vertical position.

11. In a furnace arch of the character described, hanger beams having inclined base` upper portions with' said bracket also having a stepped described, a main arch portion composed of pendulum hanger tiles, a curved arch portion arranged at the inner end of'said main ,arch portion and composed of fan tiles having arcuate grooves 1n their lateral faces, said fan tiles being half the length of said pendulum hanger tiles, knee bracketshaving arcuate flanges to be engaged by the arcuate grooves incertain of said fan tiles, 'other knee brackets alternating with the'first mentioned knee bracketsand also having arcuate flanges to be engaged by the arcuate grooves in certain of the fan tiles, said latter knee brackets also having horizontal flanges for supportinga rew of the pendulum hanger `tiles adjacent said fan tiles.

porting the knee brackets therefrom, said knee clamps b eingarrangedt in pairs and having bent intermediate portions to embrace the upper faces ofthe knee brackets, and bolts for Vconnecting ltogether the u per ends and the lower ends of each pair of nee clamps. f

14. Ina furnacearch of the character described, a curvedarch section, brackets for supporting the same, a pair of Lbeams extending transversely above said brackets, clamps connected at their lower ends toV said brackets and havingheads on their upper end portions to overlap adjacent base flanges of said beams for su orting saidbrackets from saidbeams, sal brackets .projecting laterally beyond the beams for supportingA a wall thereon, and bracket washers secured to said laterall brackets anilI overlying the adjacent base flange of one ofthe I-beams.

15. A pair of clamps for supporting a member, having oppositely extending top` flanges, fromva pair of spaced ledges, said clamps having heads on their upper end portions to overlap said ledges, said clamps also having oppositely bent intermediate portions to embrace the top flanges of the member to ber supported, means for fastening the upper end portions of said. clamps together, andv means for fastening the lower end portions of said, clamps to said member.

A16. A bracket having an arcuate base flange for supporting a curved arch section, y portion with a vertical flange against whlch the lower end of said arcuate flange abutsmnd a projecting vportionsl of the lll) ian

horizontal -flangeon saidstepped portion on the other side of said vertical flange from the arcuate flange for supporting a horizontal arch section adjacent and substantially Y on the same level as the lower edge of said curved arch section.

17. A bracket having an arcuate base flange for supporting a curved arch section, said bracket also having a stepped portion with a vertical flange against which the lower end of said arcuate ange abuts, and a horizontal flange on said stepped portion on the other side of said vertical flange from the arcuate Hange for supporting a horizontal arch section adjacent and substantially Aextending vertical flanges extending from said horizontal flanges to said arcuate flanges for the/purpose specified.v

19. A pendulum hanger tile for furnace arches, having a rectangular body portion and Y.a reduced top portion, there being alined vertical grooves and communicating horizontal grooves in the opposite faces of said reduced .upper portion of the .tile for the purpose specified, said horizontal grooves extending in opposite directions from the bases of said vertical grooves.

20. A pendululn 4hanger tile for furnace arches, having a rectangular body portion and a reduced top portion, there being alined vertical grooves and communicating horizontal grooves in the opposite faces ot' said reduced upper port-ion of the tile forl the purpose specified, the upper walls of said horizontal grooves being inclined upwardly from the bases of said vertical grooves.

21. A pendulum hanger tile for furnace4 arches, having a rectangular body portion and a reduced top portion, there being alined vertical grooves and communicating horizontal grooves in the opposite faces of said reduced upper portion of the tile for the purpose specified, said horizontal grooves extending in opposite directions from the bases of said vertical grooves, and the upper faces of the opposite end portions of said horizontal grooves being inclined upwardly from said vertical grooves.

22. In a furnace' arch of the character described; pendulum hanger tiles having `each tile, said clips having sp reduced upper portions with alined vertical grooves in their opposite faces, there being horizontal grooves communicating with said vertical grooves in said opposite faces of the reduced upper portions of the tiles, and tile clips for supporting said tiles, said clips having spaced downwardly extending arms to embrace the reduced upper portions of the tiles, there being lugs on the lower end portions of said arms to engage in the horizontal grooves in the opposite faces of the reduced upper portions of the tiles, said lugs being introduced into said horizontal grooves through'said vertical grooves.

23. In a furnace arch of the character described, pendulum hanger tiles having reduced upper portions with alined vertical grooves in their opposite faces, there bein-g horizontal grooves communicating with said vertical grooves in said opposite faces of the reduced upper portions of the tiles, and tile clips for supporting said tiles, said clips having spaced downwardly extending arms to emtbrace the lreduced upper portions of the tiles, there being lugs on the lower end portions of said arms to engage in the horizontal grooves inthe opposite faces of the reduced upper portions of the tiles, said lugs being introduced into said horizontal grooves through said vertical grooves, the upper walls of said horizontal grooves being inclined upwardly from the vertical grooves for the purpose specified. v

24. In a furnace arch of the character described, pendulum hanger tiles having reduced upper portions with alined vertical grooves in their opposite faces, there being horizontal grooves in said opposite faces of the reduced upper portions of said tiles', said horizontal grooves communicating with and extending 1n opposite directionsfrom the lower ends of said vertical grooves, and tile clips for supporting said tiles, a pair of said clips being employed for supporting each tile, said clips having spaced downwardly extending arms to embrace the reduced upper portions of the tiles, there being lugs on the lower end portions of said arms to engage in the end portions of said horizontal grooves in the opposite faces of said reduced upper portions of the tiles, said lugs being introduced into said horizontal grooves through said vertical grooves- 25. 'In a furnace arch of the character described, pendulum' hanger tiles having reduced upper portions with alined vertical grooves in their opposite faces, there being horizontal grooves in said opposite faces of the reduced upper portions of said tiles, said horizontal grooves communicating with and extending in opposite directions from the lower ends of said vertical grooves, and tile clips for supporting said tiles, a. pair of said clips being employed for ,gpporting downllU wardly extending arms to embrace the re duced upper portions of the tiles, there being lugs on the lower end portions of said arms to engage in the end portions of said horizontal grooves in the opposite faces of Y said reduced upper portions of the tiles, said lugs being introduced into said horizontal grooves through said vertical grooves` the upper walls of the end portions of said Ahorizontalgrooves communicating with and extending in opposite directions from the lower ends of said vertical grooves, and tile clips for supporting said tiles, a pair of said clips being employed for supporting each tile, said clips having spaced downwardly extending armsto embrace the reduced upper portions of the tiles, there being lugs on the lower end portions of said arms to engage in the end portions of said horizontal grooves in the opposite faces of said reduced upper portions of the tiles, said lugs being introduced into said horizontal grooves through said vertical grooves, the lower end portions of said arms also having projections to extend along the horizontal grooves toward the vertical grooves for retaining said lugs in said horizontal grooves when both clips of a pair are engaged therewith.

27. A stirrup-shaped tile clip for supporting a pendulum tile in a furnace arch, said clip having spaced downwardly extending .substantially vertical arms to embrace the upper portion of a tile, said arms having lugs extending toward one another to interlock with said tile, said clip also having an integral cross-bar joining the upper ends of said arms and providedwith a laterally extending hook to engage a supporting member.

28, A stirrup-shaped tile clip for supporting a pendulum tile in a furnace arch, said clip having spaced downwardly extending lock with said tile, said clip also having an integral cross-bar joining the upper ends of' said arms and provided with a laterally extending hookl to engage a supporting member, the inner faces of said arms being 1nclined for the purpose specified.

29. A stirrup-shaped tile clip for supporting a pendulum tile in a furnace arch, said clip havingspaced downwardly extending substantially vertical arms to embrace the upper portion of a tile, said arms having lugs extending toward one another tol interlock with said tile said clip also having an integral cross-bar joining the upper ends of said arms and provided with a laterally extending hook to engage-a supporting member, there being projections on the lower ends of said arms extending in the same directions as the. hooks on the upper ends of the clips for the purpose specified.

30. A stirrnp-shaped tile clip for supporting a pendulum tile in a furnace arch, said clip having spaced downwardly extending substantiallv vertical arms to embrace the upper portion of a tile, said arms having lugs extending toward one another to interlock with said tile, said clip also having an integral cross-bar joining the upper ends of said arms and provided with a laterally extending hook to engage a supporting member. said hook being beveled longitudinally of the clip for the purpose specified.

31. A stirrup-shaped tile clip for supporting a pendulum tile in a furnace arch, said clip having spaced downwardly extendingsubstantially vertical arms to embrace the upper portion of a tile, said arms having lugs extending toward one another to interlock with said tile., said clip also having an integral cross-bar joining the upper ends of said arms and provided with a laterally extending hook to engage a supporting member. said hook being beveled in opposite directions longitudinally of the clip for the purpose specified.

In testimony whereof I have signed my name to this specification. f

.FREDERICK o. STIMMEL. 

